Wilks Calculator With Age

Adjusted Wilks for age:

\[ Wilks = \frac{Total \times 500}{a + b \times Bodyweight + c \times Bodyweight^2 + d \times Bodyweight^3 + e \times Bodyweight^4 + f \times Bodyweight^5} \times AgeFactor \]

Total Lift:

Bodyweight:

Age:

years

Gender:

Wilks (dimensionless):

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1. What is the Wilks Score?

The Wilks Score (or Wilks Coefficient) is a measure of strength relative to body weight used in powerlifting. It allows for comparison of lifters across different weight classes. The age-adjusted version accounts for the natural decline in strength with aging.

2. How Does the Calculator Work?

The calculator uses the Wilks formula with age adjustment:

\[ Wilks = \frac{Total \times 500}{a + b \times Bodyweight + c \times Bodyweight^2 + d \times Bodyweight^3 + e \times Bodyweight^4 + f \times Bodyweight^5} \times AgeFactor \]

Where:

\( Total \) — Sum of best squat, bench press, and deadlift (kg)
\( Bodyweight \) — Lifter's bodyweight (kg)
\( a-f \) — Gender-specific coefficients
\( AgeFactor \) — Adjustment factor based on age

Explanation: The equation accounts for the non-linear relationship between bodyweight and strength potential, with different coefficients for men and women, plus age adjustment.

3. Importance of Wilks Score

Details: The Wilks Score is widely used in powerlifting to compare athletes across weight classes and genders. The age-adjusted version provides fair comparison across age groups.

4. Using the Calculator

Tips: Enter your best competition total in kg, current bodyweight in kg, age in years, and select gender. All values must be valid (total > 0, bodyweight > 0, age between 1-120).

5. Frequently Asked Questions (FAQ)

Q1: Why use Wilks instead of raw totals?
A: Wilks allows fair comparison between lifters of different bodyweights by accounting for the non-linear relationship between size and strength.

Q2: What are good Wilks scores?
A: 300+ is excellent, 400+ is world class. Women typically score about 85% of men's scores due to coefficient differences.

Q3: How does age affect Wilks?
A: The age factor reduces the score starting at age 31 to account for natural strength decline (1.0 at 24-30, 0.97 at 31-35, down to 0.76 at 60+).

Q4: Are there limitations to Wilks?
A: It may not perfectly account for extreme bodyweights and doesn't consider body composition. Newer formulas like IPF Points exist but Wilks remains popular.

Q5: Should I use this for training?
A: Wilks is best for competition comparisons. For training, absolute strength and bodyweight management may be more relevant.